RADIO shock-jock Ray Hadley has remained silent on-air regarding revelations he is being sued by a station employee over an altercation that led to the 2GB star being briefly suspended.

Sydney’s top-rating radio host is also facing the additional claim of false imprisonment with allegations another staff member guarded the door to his office during the tirade.

Hadley undertook his 9.00am show as usual without a mention of the impending civil case but last night told The Daily Telegraph he was disappointed the colleague had started legal action because he had apologised for his part in the exchange.

"The action arises out of an incident that occurred in February this year in my office and which was reported in detail at the time and, more recently, on the ABC's Australian Story program. Following the incident, I sincerely and openly apologised to Mr Palmer and the staff at 2GB,” Hadley said in a statement.

Mr Palmer remained employed at 2GB and working at our Pyrmont offices for some time afterwards and I had hoped he had accepted my apology and we could resolve the situation and work well together in the future.”

“It is disappointing he has chosen to pursue legal action seeking damages against me."

It is understood the morning host's legal team has been served papers over the altercation with Richard Palmer on February 7.

The alleged incident occurred when Hadley called Mr Palmer into his office to discuss why a podcast of his show was not uploaded to his website.

It is alleged that during this conversation Hadley berated Mr Palmer and allegations of "false imprisonment" have also been levelled after claims a colleague allegedly guarded the exit to Hadley's office while they were in the room.

It was claimed at the time Mr Palmer had profanities to describe members of Hadley's production team, including an offensive joke about former station manager Ian Holland, who was involved in a plane crash in January 2010, which he was lucky to survive.

Hadley’s silence is in stark contrast to his actions at the time of the incident when he made a public statement at the commencement of his regular show and afterwards gathered station staff into the boardroom and emotionally apologised, at times breaking into tears.

A brief suspension over the alleged incident was handed down by Macquarie Radio Network managing director Rob Loewenthal but was later overturned by the network's majority owner John Singleton.

A statement of claim was lodged in the District Court of NSW on Friday.